/*
* Geotoolkit - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2002-2008, Open Source Geospatial Foundation (OSGeo)
* (C) 2009, Geomatys
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotoolkit.filter.capability;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import org.opengis.filter.capability.ComparisonOperators;
import org.opengis.filter.capability.Operator;
/**
* Immutable comparison operators.
*
* @author Johann Sorel (Geomatys)
* @module
*/
public class DefaultComparisonOperators implements ComparisonOperators {
private final Map<String,Operator> operators = new HashMap<String,Operator>();
public DefaultComparisonOperators(final Operator[] operators) {
if(operators == null || operators.length == 0){
throw new IllegalArgumentException("Functions must not be null or empty");
}
for(Operator op : operators){
this.operators.put(op.getName(), op);
}
}
/**
* {@inheritDoc }
*/
@Override
public Collection<Operator> getOperators() {
return operators.values();
}
/**
* {@inheritDoc }
*/
@Override
public Operator getOperator(final String name) {
return operators.get(name);
}
/**
* {@inheritDoc }
*/
@Override
public boolean equals(final Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final DefaultComparisonOperators other = (DefaultComparisonOperators) obj;
if (this.operators != other.operators && (this.operators == null || !this.operators.equals(other.operators))) {
return false;
}
return true;
}
/**
* {@inheritDoc }
*/
@Override
public int hashCode() {
int hash = 7;
hash = 11 * hash + (this.operators != null ? this.operators.hashCode() : 0);
return hash;
}
}